1980～1983年低纬西太平洋、印度洋地区低频振荡的空间型和遥相关分析  

THE SPATIAL PATTERNS AND TELECONNECTION ANALYSIS OFLOW FREQUENCY OSCILLATION OVER WEST PACIFIC ANDINDIAN OCEAN IN LOW-LATITUDE FROM 1980 TO 1983

作　　者：温之平[1] 梁必骐[1] 

机构地区：[1]中山大学大气科学系

出　　处：《应用气象学报》1996年第4期460-465,共6页Journal of Applied Meteorological Science

摘　　要：利用１９８０年１月～１９８３年１２月已滤波的ＯＬＲ资料，采用经验正交函数分析方法，对１９８０～１９８１年（正常年）和１９８２～１９８３年（异常年）低纬西太平洋和印度洋地区低频振荡的空间分布及遥相关特征进行了研究．结果表明：正常年与异常年，这些地区低频振荡的强度、空间型及时间系数的变化有较大的差异．此外，还发现正常年这些地区存在３种低频遥相关，即赤道西太平洋型，北热带西太平洋型和赤道印度洋型；异常年则仅存在２种低频遥相关，即赤道西太平洋型和南热带西太平洋型．由于受厄尔尼诺事件的影响。Using the filtered OLR data from 1980 to 1983, the features of low frequency oscillation over the West Pacific and the Indian Ocean in lower latitude are studied by means of theEOF method. The results show that there exist great differences to the intensities, spatialpatterns and the variations of time coefficient of low frequency oscillations in these regionsbetween normal years (1980￣ 1981 ) and abnormal years (1982￣ 1983 ). Furthermore, it isfound that there exist three species of low frequency teleconnections for normal years, i. e.the equatorial West Pacific, the northern tropical West Pacific and the equatorial Indian Ocean patterns, while there only exist two species of those for abnormal years, i. e. the equatorial West Pacific and the southern tropical West Pacific patterns. Because of the influencesof El Nino, there exist great variations both for the locations and intensities of low frequencyoscillation centers of west-east bipolar circulation pattern.

关 键 词：低频振荡 遥相关 厄尔尼诺 太平洋 印度洋 

分 类 号：P732.6[天文地球—海洋科学]